Amulet of "Tree Powers Activate"

if you are wearing the amulet, and say the following phrase "tree powers activate" out loud in any situation, you will turn yourself into a tree. the thing is though since you turn into a tree, and you have to say the phrase "tree powers activate" you physically wont be able to turn back (because trees cant really talk and you need to be able to speak the phrase of power to use it) although you can choose what type of tree you will become, when using this item of immense power. the best time to use this amulet would be when you are about to die, and so you speak the sentence, and you become part of nature.

Notes: Disadvantage: Acrobatics, useable by anyone as long as they can speak